/// <returns>
/// type of
/// <see cref="Tup.Cobar4Net.Parser.Ast.Expression.Primary.Wildcard" />
/// is possible. never null
/// </returns>
/// <exception cref="System.SqlSyntaxErrorException">
/// if identifier dose not matched
/// </exception>
protected internal virtual Identifier Identifier()
{
if (lexer.Token() == MySqlToken.None)
{
lexer.NextToken();
}
Identifier id;
switch (lexer.Token())
{
case MySqlToken.OpAsterisk:
{
lexer.NextToken();
var wc = new Wildcard(null);
wc.SetCacheEvalRst(cacheEvalRst);
return(wc);
}
case MySqlToken.Identifier:
{
id = new Identifier(null, lexer.GetStringValue(), lexer.GetStringValueUppercase());
id.SetCacheEvalRst(cacheEvalRst);
lexer.NextToken();
break;
}
default:
{
throw Err("expect id or * after '.'");
}
}
for (; lexer.Token() == MySqlToken.PuncDot;)
{
switch (lexer.NextToken())
{
case MySqlToken.OpAsterisk:
{
lexer.NextToken();
var wc_1 = new Wildcard(id);
wc_1.SetCacheEvalRst(cacheEvalRst);
return(wc_1);
}
case MySqlToken.Identifier:
{
id = new Identifier(id, lexer.GetStringValue(), lexer.GetStringValueUppercase());
id.SetCacheEvalRst(cacheEvalRst);
lexer.NextToken();
break;
}
default:
{
throw Err("expect id or * after '.'");
}
}
}
return(id);
}
/// <exception cref="System.SqlSyntaxErrorException" />
public static ISqlStatement Parse(string sql, MySqlLexer lexer, string charset)
{
try
{
ISqlStatement stmt = null;
var isEof = true;
var exprParser = new MySqlExprParser(lexer, charset);
switch (lexer.Token())
{
case MySqlToken.KwDesc:
case MySqlToken.KwDescribe:
{
stmt = new MySqlDalParser(lexer, exprParser).Desc();
goto stmtSwitch_break;
}
case MySqlToken.KwSelect:
case MySqlToken.PuncLeftParen:
{
stmt = new MySqlDmlSelectParser(lexer, exprParser).SelectUnion();
goto stmtSwitch_break;
}
case MySqlToken.KwDelete:
{
stmt = new MySqlDmlDeleteParser(lexer, exprParser).Delete();
goto stmtSwitch_break;
}
case MySqlToken.KwInsert:
{
stmt = new MySqlDmlInsertParser(lexer, exprParser).Insert();
goto stmtSwitch_break;
}
case MySqlToken.KwReplace:
{
stmt = new MySqlDmlReplaceParser(lexer, exprParser).Replace();
goto stmtSwitch_break;
}
case MySqlToken.KwUpdate:
{
stmt = new MySqlDmlUpdateParser(lexer, exprParser).Update();
goto stmtSwitch_break;
}
case MySqlToken.KwCall:
{
stmt = new MySqlDmlCallParser(lexer, exprParser).Call();
goto stmtSwitch_break;
}
case MySqlToken.KwSet:
{
stmt = new MySqlDalParser(lexer, exprParser).Set();
goto stmtSwitch_break;
}
case MySqlToken.KwShow:
{
stmt = new MySqlDalParser(lexer, exprParser).Show();
goto stmtSwitch_break;
}
case MySqlToken.KwAlter:
case MySqlToken.KwCreate:
case MySqlToken.KwDrop:
case MySqlToken.KwRename:
{
stmt = new MySqlDdlParser(lexer, exprParser).DdlStmt();
isEof = IsEOFedDdl(stmt);
goto stmtSwitch_break;
}
case MySqlToken.KwRelease:
{
stmt = new MySqlMtsParser(lexer).Release();
goto stmtSwitch_break;
}
case MySqlToken.Identifier:
{
var si = SpecialIdentifier.None;
if ((si = SpecialIdentifiers[lexer.GetStringValueUppercase()]) != SpecialIdentifier.None)
{
switch (si)
{
case SpecialIdentifier.Truncate:
{
stmt = new MySqlDdlParser(lexer, exprParser).Truncate();
goto stmtSwitch_break;
}
case SpecialIdentifier.Savepoint:
{
stmt = new MySqlMtsParser(lexer).Savepoint();
goto stmtSwitch_break;
}
case SpecialIdentifier.Rollback:
{
stmt = new MySqlMtsParser(lexer).Rollback();
goto stmtSwitch_break;
}
}
}
goto default;
}
default:
{
throw new SqlSyntaxErrorException("sql is not a supported statement");
}
}
stmtSwitch_break:
;
if (isEof)
{
while (lexer.Token() == MySqlToken.PuncSemicolon)
{
lexer.NextToken();
}
if (lexer.Token() != MySqlToken.Eof)
{
throw new SqlSyntaxErrorException("Sql syntax error!");
}
}
return(stmt);
}
catch (Exception e)
{
throw new SqlSyntaxErrorException(BuildErrorMsg(e, lexer, sql), e);
}
}